Late Cenozoic tectono-sedimentary development of the Selendi and Usak-Gure basins: A contribution to the discussion on the development of east-west and north trending basins in western Turkey

This paper expands the K-Ar dating and palynologically controlled stratigraphical data base reported in earlier papers to the north trending Selendi and Usak-Gure basins located to the north of east-west trending Alasehir graben in western Turkey. These north trending basins began to form during Early Miocene times and most of their basin fills accumulated before 14 Ma, except for the youngest Asartepe formation. Recent studies of both east-west grabens and north trending basins show that they started to develop simultaneously during Early Miocene times under the north-south extensional regime, and the classification of the structures as 'replacement' and 'revolutionary' has no meaning for the Alasehir graben and the basins located to its north.